The English translation of Dr. Barthel's well-known book is practically a new edition, for the subject matter has been completely revised and considerable additions have been made to it. Those engaged in the examination of milk or dairy products will find in this volume a detailed description of the most reliable methods used in this important branch of analytical work. As many of the methods have been carefully tested by the author himself the are to be regarded as the most satisfactory ones to be followed. The proofs of this edition have been seen and approved by Dr. Barthel.
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